CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Cash dividends per share common stock (in dollars per share)	$ 0.16	$ 0.13	$ 0.32	$ 0.26
Shares of common stock purchased (in shares)				1,761
Shares of common stock issued (in shares)	2,086,450	3,370,206	2,212,562	4,486,850
Series D Preferred Stock
Cash dividends per share preferred stock (in dollars per share)		$ 17.50		$ 35